Duties of Subcontractors. 8.1 The provisions of the Main Agreement shall also apply to subcontractors elected by the Supplier. In any case, the commissioning of subcontractors shall not affect Supplier’s responsibility before MBBras for the performance of the contracted goods or services, in particular with regard to the granting of rights to use the work results. 8.2 The Supplier shall select any subcontractors carefully attending the requirements set out herein, monitor them and include them in his information and work processes concerning FOSS. This shall be demonstrated by suitable documentation, e.g. excerpts from the corresponding agreements. MBBras shall be entitled to contact the subcontractor in order to clarify queries relating to the FOSS used. The Supplier shall be informed thereof. 8.3 The Supplier shall, at MBBras’ request, no longer use Subcontractor for MBBras in connection with FOSS if MBBras has any evidence to doubt the subcontractors’ reliability and willingness to cooperate in terms of compliance with MBBras’ requirements for the use of FOSS. Costs and expenses resulting therefrom shall be borne by the Supplier. 9.